NORMAL
OVER HEATING
FUSED SPOT DEPOSIT
Has gray or light tan deposits on the firing
tip.
Light gray or white insulator with small gray
brown or black spots. Electrodes have a
bluish burnt appearance.
Has spotty or melted deposits resembling
blisters or bubbles.
Caused by sudden acceleration.
Replace spark plug.
May be caused by engine over heating,
loose spark plugs, wrong fuel type, too hot
a plug, low fuel pump pressure, or incorrect
ignition timing.
Replace spark plug.
LEAD FOULED
CARBON FOULED
WORN
Has dark black, gray, tan, or yellow depos-
its. May have a fused glazed coating on the
insulator tip.
Black dry fluffy carbon deposits are found
on insulator tips, electrodes, and exposed
shell surfaces.
Has a severely eroded or worn electrode.
Caused by normal wear.
Replace spark plug.
Caused by highly leaded gasoline.
Replace the plug.
Weak ignition, too cold a plug, fuel mixture
too rich, defective fuel pump, excessive id-
ling, or improperly operating heat riser may
be the cause.
Replace spark plug.
GAP BRIDGED
OIL FOULED
PRE–IGNITION
Gap between electrodes is closed by de-
posit build up.
Wet black deposits can be found on elec-
trodes, insulator, and in the bore.
Electrodes are melted and the insulator
may be blistered. Metallic deposits on the
insulator indicate engine damage.
May be caused by carbon or oil fouling.
Replace spark plug.
Excessive oil entering the combustion
chamber through excessive clearances be-
tween valve guides and stems, worn or
loose bearings, or worn rings and pistons.
Engine over heating, burnt valves, too hot a
plug,incorrect ignition timing or advance, or
wrong type of fuel are causes.
Replace spark plug.
Replace spark plug.
Electrical System
Greensmaster 1000/1600
Page 5 – 16
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Greensmaster 1000, Toro Greensmaster 1600, Toro Greensmaster 96889SL |
| Download File |
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| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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